> ## Documentation Index
> Fetch the complete documentation index at: https://docs.varg.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Video Upscale

> Enhance video resolution with 4 models from budget to premium quality

## Overview

Upscale video resolution with four models at different quality-cost tradeoffs.

| Model ID              | Quality   | Credits | \~Cost | Provider               |
| --------------------- | --------- | ------- | ------ | ---------------------- |
| `topaz-video`         | Best      | 50      | \$0.50 | fal (Topaz Labs)       |
| `seedvr-video`        | Very good | 30      | \$0.30 | fal (ByteDance SeedVR) |
| `bytedance-upscaler`  | Good      | 25      | \$0.25 | fal (ByteDance)        |
| `sima-video-upscaler` | Budget    | 15      | \$0.15 | fal (Sima Labs)        |

## Quick start

<CodeGroup>
  ```typescript SDK theme={null}
  import { createVarg } from "vargai/ai"

  const varg = createVarg({ apiKey: process.env.VARG_API_KEY! })

  const result = await varg.videoModel("seedvr-video").generate({
    videoUrl: "https://example.com/low-res-video.mp4",
  })

  console.log(result.video.url)
  ```

  ```bash cURL theme={null}
  curl -X POST https://api.varg.ai/v1/video \
    -H "Authorization: Bearer $VARG_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{
      "model": "seedvr-video",
      "prompt": "",
      "files": [{ "url": "https://example.com/low-res-video.mp4" }]
    }'
  ```
</CodeGroup>

## Parameters

<ResponseField name="files" type="array" required>
  Single video file to upscale: `[{ url: "video.mp4" }]`.
</ResponseField>

<Note>
  Video upscale models don't use prompt, duration, or aspect\_ratio. They take a video file and return it at higher resolution.
</Note>

## Model comparison

| Model                 | Best for                             | Pricing model                 |
| --------------------- | ------------------------------------ | ----------------------------- |
| `topaz-video`         | Maximum quality, professional output | $0.01-$0.08/second            |
| `seedvr-video`        | Good quality at moderate cost        | \$0.001/megapixel \* frames   |
| `bytedance-upscaler`  | Balance of quality and speed         | $0.007-$0.029/second          |
| `sima-video-upscaler` | Budget/bulk upscaling                | \$0.00025/megapixel \* frames |

## Tips

* **Sima is the cheapest** — good for batch upscaling where top quality isn't critical.
* **Topaz produces the best results** but costs 3x more than the cheapest option.
* **Post-process your AI videos** — upscale after generation to improve the perceived quality of any video model's output.
* **Watch file sizes** — upscaled video files can be significantly larger. Consider your storage and bandwidth.

## Related models

<CardGroup cols={2}>
  <Card title="Image Upscale" icon="expand" href="/models/upscale/image-upscale">
    Upscale image files instead of video.
  </Card>
</CardGroup>